Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method and application of a nitrogen-sulfur double-doped biochar

A technology of biochar and double doping, applied in biological sludge treatment, chemical instruments and methods, waste fuel, etc., can solve the problems of easy acidification, lack of biochar function regulation technology, poor methane production efficiency, etc., and achieve easy application , Low preparation cost, efficient and stable performance

Active Publication Date: 2021-12-21
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in view of prominent problems such as easy acidification and poor methane production efficiency in the anaerobic fermentation process, there is a lack of functional regulation technology to improve the orientation of biochar, which has become a technical bottleneck for the technical improvement of the coupling system of biochar and anaerobic fermentation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of a nitrogen-sulfur double-doped biochar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The feed rate loofah dewatered to 80-85% moisture content, using 1mol / L hydrochloric acid pickling, after slowly stirred for 3 hours after 85 ℃ oven dried for 12 hours, pulverized to a particle size 2 Flow rate of 400 mL / min, with nitrogen for sulfur doping process. The final product was obtained using 1mol / L was pickled, washed with distilled water, final eluent pH does not change, the drying 105 deg.] C for 12 hours to obtain nitrogen-doped thiodicarb specific biological carbon material.

[0027] Analysis of the physicochemical properties of biocoke special preparation, the specific surface area found that material reaches 530m 2 / G, pore volume of large 0.316cm³ / g, belonging to the mesoporous structure, primarily the iron oxide contained in the ash of metal elements Fe, Fe content accounts special carbon material 5wt%, the nitrogen element occupies cases 6wt%, sulfur accounted cases 4wt%, which is mainly caused by doping nitrogen sulfur, it showed a substantial ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The preparation method and application of a nitrogen-sulfur double-doped biochar of the present invention, the overall process is: using waste loofah as a raw material, through liquid nitrogen pretreatment, hydrothermal carbonization and high-temperature pyrolysis carbonization, nitrogen and sulfur elements are assembled Heteroatom doping technology to prepare nitrogen-sulfur double-doped magnetic special carbon. The magnetic special carbon prepared by the invention has high specific surface area, porosity and high conductive activity, and is applied to strengthen the anaerobic fermentation process of livestock and poultry manure, which can shorten the fermentation time and improve the methane production activity. The special carbon material not only effectively solves the problem of The problem of high-efficiency methane production from livestock and poultry manure has realized the resource utilization of waste, low cost, high-efficiency and stable performance, and has the advantages of energy saving, emission reduction, low-carbon environmental protection and sustainable development, suitable for large-scale industrial production and application .

Description

Technical field [0001] The present invention belongs to the technical field biochar, particularly relates to a method for preparing and Application of a nitrogen-doped thiodicarb biochar. Background technique [0002] With the shortage of resources and environmental issues have become increasingly prominent, the development of green sustainable development of new materials and expand the application of space plant material has great significance and social development leads to environmental and resource shortages have become increasingly prominent, people have looked to focus on investment in seeking cost inexpensive and good performance of comprehensive development and utilization of natural renewable resources of biomass research, and look forward to gradually get rid of the waste of resources constraints shortage of human life and social development brings. Nature and variety of biomass material not only has a rich source of renewable and sustainable biodegradable characterist...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/348C01B32/324C01B32/354C02F11/04
CPCC01B32/348C01B32/324C01B32/354C02F11/04Y02E50/30
Inventor 庄海峰唐浩杰单胜道张昌爱平立凤施赟高红贝谢巧娜
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com